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Finding the Fourth Proportional to 199,421.48, 275,191.30 and 123,968.68

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Solution

The fourth proportional to 199,421.48, 275,191.30 and 123,968.68 is: 171,070.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,421.48 : 275,191.30 = 123,968.68 : x
  2. Step 2: Convert to fraction form
    199,421.48/275,191.30 = 123,968.68/x
  3. Step 3: Cross multiply
    199,421.48x = 275,191.30 × 123,968.68
  4. Step 4: Simplify right side
    199,421.48x = 34,115,102,208.48
  5. Step 5: Solve for x
    x = 34,115,102,208.48/199,421.48
  6. Step 6: Final answer
    x = 171,070.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.